Type-writing machine.



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J. E -PATsnson. 'T YPE WRITING MAGHINE.

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UNITED STATES PATENT Orgien-f,

JOHN E. PATERSOQN, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE UNION TYPEWRITER'COMPANY, OF JERSEYCITY, NEW JERSEY.

- TYPE-WRITING MACHINE.

SPECIFICATION forming part ef Lettere Peteur No. 678,511, dated July 1e, 1901. Application filed February 6, 1900. Serial No. 4,178. (No model.)

To all whom it may concern:

Be it known that I, J OHN E. PATERSON, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of` Illinois, have invented certain new land useful Improvements in Type-Writing Machines,

of which the following is a specification.

My invention relates to type-writing, machines of the class in which the face of the type is normally in contact with an ink-pad and in which the from the inked type without the intervention of a ribbon.

The object of my invention is to provide a novel type-bar of compact construction and having a comparatively simple movement through a short path from the pad to the platen. e

My invention consists in certain combinations of devices and features of construction, all as will be more fully hereinafter described, and particularly set forth in the concluding claims.

In the accompanying drawings, Figure 1 is an enlarged View, partly in section, showing the preferred method of hinging the type-bar to the type-bar bracket. verse vertical section taken through the typebar hinge. Fig. 3 is an elevation, and Fig. 4 is a sectional View, of a ball-bearing cone. Fig. 5 is a diagrammatic elevational view of a front-strike7 type-writing machine, showing the type bar in normal position. Figs. 6 to 9 are detached views of a camsleeve. Fig. 10 is an enlarged plan view of the Atype-bar and hanger shown at Fig. 5. Fig. 11 is a detached side view of a link. Fig. 12 is a side View of a modification. Fig. 13 is a View similar to Fig. 5, but showing the position of the parts at the time the impres-l sion is made upon the paper; and Fig. 14 is an enlarged cross-section of a type-bearing spindle and socket, showing the method of preventing endwise movement of the spindle. In the several views the same part is designated by the same numeral of reference.

The type-bar bracket or hanger is designated as l and may besecured by a screw 2 to a segment 3. Formed integrally with the free end of the hanger is a lateral cone 4,'to which is secured by an axial screw 5 an opprinting is done directlyA Fig. 2 is a transposite cone 6, the inclined faces of the cones producing a ball-bearing groove. These cones are surrounded by a hub, ring, or eye 7, having an interior channel in the form of a V- groove 8, which faces the V-groove formed 4by the saidcones, so that the two V-grooves taken together form a raceway for a series of bearing-balls 9. Formed integrally with the hub 7 is a radial arm l0, which is drilled 1ongitudinally at 1l to form a socket-bearing for a spindle 12, which turns freely in said bearing. Said spindle carries at its outer end a type-block 13, provided, preferably, with a plurality of types 14. To prevent endwise movement of the spindle 12, the same is grooved circumferentially at a point 15 near its inner end, and a pin 16'is passed transversely through the middle of the arm or socket-piece 10 in position to engage the said grooye 15. The arrangement of the pin 16 is such that its side engages said groove, as illustrated at Figs. 1 and 14, so that the spindle is eifectually prevented from moving endwise without being undulyl weakened, inasmuch as the groove 15 is shallow, while it has a substantial engagement with said pin 16.

The types 14 normally rest upon a segmental ink-pad 17 and are swung to the platen 18 in an arc of a circle of which the axis 5 is the center. This swinging movement of the typebar may be produced in any suitable manner, as by means of a perforated ear 19, project ing downwardly from the under side of the hub 7, a horizontal link 20, pivoted at its rear end to said ear, a bell-crank lever 21, to which the forward end of said link is pivoted and which in turn is pivoted at 22 upon a transverse slotted fulcrum-bar 23, and a vertical link 24, wh ose upper end is pivoted to the free end of the horizontal member of said bell-crank and whose lower end is pivoted to a horizontal key-lever 25, fulcrumed upon a transverse rod 26.

For causing an independent rotary move ment of the type-bar spindle 12 a sleeve 27is arranged upon the latter, so as to have a sliding endwise movement. Said sleeve is provided With a pair of ears 28, to which is pivoted'at 29 the forward end of a link 30, the rear end of said link being pivoted at 31 to ears 32, which fork said link and are formed upon the upper end of the bracket or hanger 1. During the swinging movement of the type-bar about the axis 5 the pivot 28 follows a curved path 33 about the axis 31, which is eccentric to the axis 5, so that as the typebar is swung to and from the platen the sleeve is moved back and forth along the spindle 12. Said sleeve is prevented from turning about the spindle by means of its engagement with the link 30, which owing to its connections with the ears 32 is prevented from twisting or turning sidewise. Along spiral slot 3J: is cut through the wall or body of said sleeve and is engaged by a short radial pin 35, driven into the spindle 12, so that as the sleeve is forced along said spindle in the described manner the latter is caused to rotate by the engagement of the cam-slot 34 with said pin. Said slot is provided at each end with a dwell portion 3-1, in which the pin 35 works during the initial and final portions of the swinging movement of the type-bar in either direction, so that the type is sure to be positioned to strike squarely both the pad and the platen. It will be understood that the said dwell portions 34:"L are upon diametrically opposite sides of the sleeve. Fig. 6 is a general side view of the cam-sleeve, showing the middle or working portion of the camslot. At Fig. 8 the sleeve is represented as having been given a quarter-turn in one direction and at Fig. 9 as having been given a quarter-turn in the other direction. Fig. 7 is an edge view of the cam-sleeve.

The operation will be understood by reference to Figs. 5 to 13, from which it will be seen that at the depression of the key-lever 25 the link 24 is pulled down, causing the bell-crank 21 to vibrate and pulling forward the link 2O and the ear 19 upon the hub 7 and causing the latter to turn upon the ball-bearings about the axis 5, together with the integral arm orsocket-piece 10 and the type-carry; ing spindle 12 mounted therein. The sleeve 27 is swung upwardly with the spindle and is simultaneously caused to move outwardly along said spindle, owing to its connection with the link 30. Said sliding movement of the link causes a half-revolution of the spindle and the type thereon by reason of the engagement of the cam-slot 31 upon the sleeve with the pin 35 upon the spindle, so that the type is given a half-turn about the spindle-axis and is enabled to make an im pression upon the platen or the paper thereon. Upon the relief of the linger-key from pressure the-parts return to normal position under the influence of the usual key-lever-returning spring 36, and the said cam-slot 3l perates through the pin 35 to give the spindle a reverse rotary movement in the socket 11. The platen 18 may be moved to either ot' two positions, as indicated by dotted lines, to cause the types 14 to print. Any other suitable connections may be provided between the type-bars and the keys. The improvementis illustrated in connection with a front-strike machine,but obviously the same is also adapted to machines of other design.

Referring now to Fig. 12, it will be observed that the position of the sleeve 27 on the spindle is reversed--that is, the ears 28 are below instead of above the spindle-and the link 30 extends from said ears to a point of pivotal connection 31a with ears 32, formed upon the bracket 1 at a point below and in front of the type-bar hinge 5. The operating-ear 19 upon the ring 7 projects above said ring, and a link 20 extends rearwardly from said ear to the upper end of any suitable operatinglever 2li. It will be observed that the sleeve 27 is normally at its outer position upon said spindle and that as the type-bar swings to the platen said sleeve slides inwardly upon said spindle or toward the axis 5, the rotary movement of the spindle taking place in the same manner as in the construction previously described.

From the foregoing it will be seen that I have produced a type-bar which has a short movement from the ink-pad to the platen, the type -bearing spindle and its bearing swinging together about their common axis 5. The mechanism is simple and not liable to get out of order, while, owing to its light weight, the touch upon the key is rendered extremely easy. It will be observed that the type travels in a regular arc of a circle about the hinge-point 5 of the type-bar bracket, or, in other words, the type has only two movements, one movement about said hinge 5 and the other a rotary movement about the axis 12. As the spindle and type are of light construction and as the spindle may turn freely in its socket,- the force required to turn the spindle and type is very light, so as not to be appreciated by the operator and not to subject the parts to undue stress. All of the parts are easily and cheaply made and readily assembled.

The described construction of a type-bar ball-bearing hinge is well adapted also for other designs of type-bars, including those which are used in connection with a ribbon and which have a plain swinging movement from the type-basket to the platen.

While l have shown my improved type-bar motion in connection with a ballbearing hinge, it is of course obvious that said ballbearing hinge is not essential to the compound movement of the type and that in so far as the latter improvements are concerned they may be utilized with any other kind of a bearing, with or without bearing-balls.

While I have shown my improvements as Supported upon an individual type-barhanger or bracket, it is obvious that the type-moving mechanism may be used in connection with other type-bar supports.

What -I claim as new, and desire to secure by Letters Patent, is-

1. In a type-writing machine, the combination with a hub, of a radial arm thereon, a

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bore formed radially in said arm, a spindle one of whose ends is inserted in said bore and the other of whose ends carries a type, a circumferential groove formed near the inner end of said spindle, a pin secured in said arm and engaging said groove, means for swinging said hub, arm and spindle about a common axis, and means for turning said spindle independently in said bore.

2. In a type-writing machine, the combination of a hub, a radial arm thereon, a bore formed radially in said arm, a type-carrying spindle inserted in said bore, a circumferential groove formed near the inner end of said spindle, and a pin, passing transversely through said arm so that the sides of said pin engage said circumferential groove, means for swinging said hub, arm and spindle about a common axis, and means for turning said spindle independently in said bore.

3. In a type-writing machine, the combination with a type-carrying spindle, of a support therefor, said spindle being constructed both to turn independently in said support and to swing together with said support, a sleeve arranged upon said spindle, means for causing relative endwise movement between said sleeve and said spindle, means controlled by said sleeve for causing said spindle to turn independently of said su pport, and means for preventing endwise movement of said spindle in said support.

4. In a type-writing machine, the combination with a type-carrying spindle, of a support in which said spindle may turn independently and by which said spindle may be swung, a sleeve arranged upon said spindle, means for producing relative endwise movement between said sleeve and said spindle, a cam-slot formed in said sleeve, a pin or projection fixed upon said spindle and engaging said cam-slot, and means for preventing endwise movement of said spindle in said support.

5. In a type-writing machine, the combination of a platen, a type-carrying spindle, aA

pivotal support therefor and by which the spindle is swung to and from the platen, means for preventing endwise movement of said spindle while permitting it to rotate within said support, a pin on said spindle, a sleeve encircling said spindle and having a cam-slot l to engage said pin, whereby7 the spindle is ro-l tated, and means for moving said sleeve back and forth during the swinging movements of the spindle to and from' the platen.

6. In a type-writing machine, the combination with a type-carrying spindle and a swinging support therefor, of a sleeve arranged upon saidV spindle, a link connected at one end of said sleeve and constructed to cause relative endwise movements between said sleeve and said spindle, and means for en abling said sleeve to cause a rotary movement of said spindle in its bearing.

7. In a type-writing machine, the combination of a type-carrying spindle provided with a swinging support, a sleeve arranged upon said spindle, a link pivoted at one end to said sleeve and at the other end to a Iixed part of the machine and constructed to cause said sleeve to move endwise along said type-carrying spindle, and means for enabling said sleeve to cause a rotary movement of said spindle.

8. In a type-writing machine, the combination of a typeacarrying spindle, a swinging support therefor, a sleeve arranged upon said spindle, a cam-slot formed in said sleeve, a pin or projection provided upon said spindle and engaging said camslot, and a link pivoted at one end to said sleeve and'at the other end to a fixed portion of the machine.

9. In a type-writing machine, the combina tionf a hub, a bracket upon which said hub is pivoted, an arm thereon, a bore formed radially in said arm, a spindle one of whose ends has a bearing in said bore and the other of whose ends carries a type, a sleeve arranged on said spindle, a cam-slot formed in said sleeve, a pin orprojection provided upon said spindle and engaging said cam-slot, and a link pivoted at one end to said sleeve and at the other end to said bracket eccentrically of the axis of said hub.

10. In a type-'writing machine,the combination with a hub, of a type-carrying spindle, a bearing arranged upon said hub for said spindle, a sleeve arranged upon said spindle and provided with a cam-slot, a pin or projection fixed upon said spindle and engaging said cam-slot, an ear formed upon said sleeve, and a link pivoted at one end to said ear and at the other end to a ixed part of the machine eccentrically of the axis of said hub.

1l. Inatype-writingmachine,thecombina tion of a type, a spindle, a bearing, means for` swinging said bearing, a sleeve, a cam, and a link attached at one end to a xed part of the machine.

12. In a type-writing machine,the combination of a type, a spindle, a bearing, a hub secured to said bearing, means for swinging said hub, bearing, spindle and type, a sleeve, a cam, and a link attached at one end to a fixed part of the machine.

Signed at Chicago, in the county of Cook and State of Illinois, this 2d day of February, A. D. 1900.

JOHN E. PATnRsoN.

Witnesses:

R. -W. HoKEsLEE, AD. PETERSON.

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